钱文勋1,2;贺传卿3,何 旸1,2; 韦 华1,2
关键词:水泥砂浆;超高性能混凝土;配合比设计模型;水化硬化机理;微观结构
Key words:Cement mortar; Ultra-high performance concrete; Model of mixture design; Mechanism of hydration and harden;Microstructure
期刊:2020年3期 No.287 P10-14
DOI:10.19761/j.1000-4637.2020.03.010.05
基金项目:国家重点研发计划(2017YFC0405102)
作者:钱文勋1,2;贺传卿3,何 旸1,2; 韦 华1,2
单位:1.南京水利科学研究院,210029;2.水利部水工新材料工程技术研究中心,南京210029;
3.新疆水利水电科学研究院,乌鲁木齐,830000
钱文勋,贺传卿,何旸,等.提升水泥砂浆耐酸性能的防护技术研究[J].混凝土与水泥制品,2020(3):10-14.
QIAN W X,HE C Q,HE Y,et al.The Protection Technology for Improving Acid Resistance of Cement Mortar[J].China Concrete and Cement Products,2020(3):10-14.
提升水泥砂浆耐酸性能的防护技术研究
Abstract:Based on the internal and external protection of hydraulic concrete - large amount of mineral admixture strategy and coating protection skills, the research and evaluation of different protections on the improvement of acid corrosion resistance were carried out to provide a support for acid corrosion resistance of relevant hydraulic structures. Four kinds of cement mortar with different W/C and mineral content were made by cement, slag and fly ash. The epoxy protective coating was used on one kind of the mortar, and the mortar specimens were soaked in sulfuric acid solution of different pH values. The quality change rate and intensity change rate of mortar at different ages and the microcosmic appearances of the surface sampled from different mortars after the erosion tests were compared and analyzed. The results show that sulfuric acid solution makes serious corrosive effect on cement mortar, and the ways to reduce the W/C can not significantly enhance the ability to resist acid attack for cementitious materials. The corrosion resistance of mortar can be obviously improved with large amount of mineral admixture and the erosion effect on cementitious materials can be significantly reduced while soaking in the medium-strong or weak acid environment. The epoxy resin can greatly improve the acid corrosion resistance of mortar.
钱文勋1,2;贺传卿3,何 旸1,2; 韦 华1,2
关键词:水泥砂浆;超高性能混凝土;配合比设计模型;水化硬化机理;微观结构
Key words:Cement mortar; Ultra-high performance concrete; Model of mixture design; Mechanism of hydration and harden;Microstructure
期刊:2020年3期 No.287 P10-14
DOI:10.19761/j.1000-4637.2020.03.010.05
基金项目:国家重点研发计划(2017YFC0405102)
作者:钱文勋1,2;贺传卿3,何 旸1,2; 韦 华1,2
单位:1.南京水利科学研究院,210029;2.水利部水工新材料工程技术研究中心,南京210029;
3.新疆水利水电科学研究院,乌鲁木齐,830000
钱文勋,贺传卿,何旸,等.提升水泥砂浆耐酸性能的防护技术研究[J].混凝土与水泥制品,2020(3):10-14.
QIAN W X,HE C Q,HE Y,et al.The Protection Technology for Improving Acid Resistance of Cement Mortar[J].China Concrete and Cement Products,2020(3):10-14.
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